Brick mold



April 12, 1932. 0.'.1. STRICKLAND BRICK MOLD l 2 Shets-neet Filed June28, 1929 INVENTOR DAVID .J. ST RICKL AND y 71111 aifarneyw www PatentedApr. 12, 1932 PATENT oI-glucE :DAVID J'. STRICKLAND, 0F BEACON, NEWYORK, ASSIGNOR T0 HENRY IOXTELI.:l

i l RAMSDELL, TRUSTEE, OF NEWBUBGH, NEW YORK BRICK MOLD Application ledJune 28,

rIhis invention has to do with brick molds for use principally inautomatic. brick making machines in which the molds are delivered fromthe expressing die to a bumping mechanismand thence to an invertingdevice. The bumper delivers alternate impacts to the ends of the mold tofree the material in the several molds cavities from its adhesion to thewall thereof so that when inverted the several brick forms will drop outfreely onto a plate which is carried away to the succeeding stages ofthe brick-making process.

The object of this invention is to improve upon existing molds by makingit less often necessary to replace theentire mold, by providing astronger construction of mold, and by lessening the cost of renewing theparts of the mold which afford the surfaces directly in contact with theplastic. rlhe characteristic feature of the invention is the use of askeleton frame of steel or other strong metal with inserts of wood, orother material suitable for direct contact with the plastic material,forming the mold cavities.

In the accompanyingV drawings- Figure 1 is a plan view of a mold madeaccording to this invention, a part being broken away to show theinterior construction.

Figure 2 is a side elevation of the same mold with a part broken away toshow the interior.

Figure 3 is an end elevation.

Figure 4 is a view in section on the line 4-4 of Figure 1.

Figures 5 and 6 are respectively a plan and an elevation of an insert ofthe type forming the end walls of the mold cavities.

Figure 7 is a perspective view of the bumper block that is secured tothe end of the mold.

Figure 8 is a perspective view of an insert of the type used to form thetransverse partif tions of the mold between every two cavities and theouter side wall of each end cavity.

Figure 9 is a perspective view of an insert used to form the bottom ofeach cavityo the mold.

of body portion 31. 1

1929. Serial N0.v374,597.

In the form of mold, built according to this invention, as I prefer tomake it, the skeleton frame consists of two side members 10, 11 ofsteel, rectangular in cross section and of about the depth of themold'itself. These two side members are secured at their ends to twosteel end members 12, 13 which are of .the shape-of an H inverticalcross section and of I shape in horizontal section, being closedV attheir sides 14, ,15 by webs integral with the top and bottom webs 16, 17and with the central transverse vertical web 18. The side members areheld to the end pieces by bolts 19 taking into the side webs 14,15. Y'

The ends of these end members -are open and that one which faces outwardreceives a bumper block 2O of wood. If desired the inner end may bepartially closed by a web 21. This bumper block is tapered on its endsand top and bottom sides and has an opening 22 through it for a bolt orrivet 23, smaller than the opening, which extends between the Vtop andbottom webs 16, 17 of the-end piece.

The block extends in far enough to engage the cross-web 18. Each endmember has a shoulder 25, along the side margins ot the top and bottomwebs, these shoulders being set back from the plane of the top andbottom for the purpose of accommodating the ends of straps which will bedescribed vhereinafter.Y Y y' The 'mold is completed by an arrangementof wood inserts correlated in shape with one another so as to'interlockand are held in the frame to form the mold cavities. rIhe bottoms of thecavities are formed by separate blocks 30 (Figure 9), one for eachcavity,

equal in width to the width of the cavity and long enough over-all toreach between the side members'10, 11v of the frame. Each j such blockhas a main portion 31 that is rectangular in section and in plan and hasprojections 32 at its ends that are of the same width ,as the body`portions but of less thickness. VArwshallow slot 33 extends along oneface 34 for the full length of 'the body por- .tion and in depth isequal to the amount of l the face set-back of the end projections fromThese bottom pieces are placed in the frame with the slotted face 34facing outwardly. A steel strap 35 rests in each slot and is held to thebody portion 31 by screws 36. A space is left between every two bottompieces and between the end pieces and the inner faces of the end members10, 11.

The end walls of the cavities are provided by small, relatively thin,blocks 4l() which rest on the projections 32 at the ends of the bottompieces and each is held between the inner face of the side memberagainst which it liesand the lateral face 37 of the main body portion 3labove the projection 32 on which it rests. The side edges l1 of theseblocks are sloped inwardly from bottom to topwhile their top faces l2lie flush with the upper edges of the side members.

The cavities' are completed by transverse partition pieces having endprojections 51 narrower than the main part 52 and tapered on their sidefac-es 53 from top to bottom so that they fit the converging adjacentedges ll of the end blocks 40, rlhe main part of each partitionis ofgreater thickness than the spacing between the end blocks which resultsin an engagement between the end faces 54 of this main part and thefaces of the end blocks near their edges. ln this way the end blocks arefurther locked against the side members while the partitions themselvesare held against sidewise movement by the fit of their taperedprojections 52 between the end blocks e0. y

To hold the partitions, and hence the end blocks, from movement out ofthe frame, a strap 55 is bolt-ed to the top edge of each side member andis wide enough to overlie the end blocks and the projections 52 on thepartitions. An additional bracing is provided by a series of crossstraps 56 on the top edge of each partitiomthese cross straps being heldto the partitions by bolts 57 extending through the partitions from thebottom and headed over in recesses in the outer surfaces of the strapsto lie Hush therewith. At the end of each strap is a. lug 58 wider atits outer end than at its inner end and integral with the straps.Suitably conforming notches in the side straps 55 receive these lugs,

providing a dovetailed joint.

On the under sid-e, there are side straps 60 bolted to the side members10, 11 and notched as the top straps are to receive lugs 61, like thelugs 58 ust described,'on the ends of the cross straps 35 which arebolted to the bottom blocks 30.

At the ends of the mold,the top and bottom sid-e straps 55, 6 0 areoff-set toward each other to Vform the extensions which rest on theshoulders V25 along the edges of the end members 12, 13.

t will be apparent that this construction has several importantadvantages overthe wooden mold, with lsome strap bracing, in

common use. The steel frame is strong enough to maintain its shape for amuch longer period of use than is a wooden mold. The replacement of thepart-s which engage the plastic material is readily accomplished. liththe existing molds, when the surfaces engaging the plastic requirereplacement, it is necessary to discard the entire mold whereas theconstruction according to this invention requires only the renewal ofthe wood insert blocks 30, 40, 50.

l claim- 1. A brick mold for an automatic brick making machine, saidmold having rigid metallic side members, a pair of rigid metallic endmembers joining said side members, a plurality of replaceable woodenlining embers between said side and end members forming the moldcavities, and bumping blocks removable secured within said end members.

2. A brick mold for an automatic brick making machine, said mold havingrigid metallic side members, a pair of rigid metallic end membersjoining said side members, a plurality of transverse wooden partitionsand a plurality of wooden bottom and end members located between saidmetallic side and end members and forming the mold cavities, said woodenmembers and partitions being replaceable, two of said transversepartitions abutting said metallic end members while the remainingpartitions each separate one mold cavity from another, and bumpingblocks removably secured in said end members.

In testimony whereof I have signed my name to this specification.

DAVID J. STRICKLANI).

